noun · 3 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
ŏz-mōˈ -sĭs
ŏs-
Received-Pronunciation:/ɒzˈməʊ̯sɪs/
Received-Pronunciation:/ɒsˈməʊ̯sɪs/
Southern-England:Recorded audio is listed in the source snapshot.
General-American:/ɑzˈmoʊ̯sɪs/
General-American:/ɑsˈmoʊ̯sɪs/
rhymes with -əʊsɪs
rhymes with -oʊsɪs
CMU ARPABET:AO2 Z M OW1 S IH0 S
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
The net movement of solvent molecules, usually water, from a region of lower solute concentration to a region of higher solute concentration through a partially permeable membrane.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
Passive absorption or impartation of information, habits, etc.; the process of teaching or learning particular knowledge incidentally rather than consciously.
Definition source: English Wiktionary via Wiktextract
Usage: countable, figuratively, uncountable
Examples
Near-synonym: serendipity
I was reading about chickens, and I guess I learned about hawks through osmosis.
Meaning relationships
Synonyms: serendipity
Antonyms: none provided
3
noun
Meaning 3
(biology, chemistry) diffusion of molecules through a semipermeable membrane from a place of higher concentration to a place of lower concentration until the concentration on both sides is equal
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: diffusion
Narrower terms: reverse osmosis
History
Etymology
From endosmose and exosmose, both coined by French physician Henri Dutrochet in 1826; from (respectively) Ancient Greek ἔνδον (éndon, “within”) and Ancient Greek ἔξω (éxō, “outer, external”), plus Ancient Greek ὠσμός (ōsmós, “push, impulsion”), from ὠθέω (ōthéō).
Across languages
Translations
57 source translations are retained for this English entry.
Arabic:
خَاصِّيَّة أُسْمُوزِيَّة
(ḵāṣṣiyya ʔusmūziyya, ḵāṣṣiyya ʔusmōziyya)
— movement of molecules across a membrane
Arabic:
تَنَاضُح
(tanāḍuḥ)
— movement of molecules across a membrane
Aragonese:
osmosi
— movement of molecules across a membrane
Asturian:
ósmosis
— movement of molecules across a membrane
Belarusian:
о́смас
(ósmas)
— movement of molecules across a membrane
Bengali:
অভিস্রবণ
(obhisrobon)
— movement of molecules across a membrane
Bulgarian:
осмоза
(osmoza)
— movement of molecules across a membrane
Catalan:
osmosi
— movement of molecules across a membrane
Chinese Mandarin:
渗透
(shèntòu)
— movement of molecules across a membrane
Czech:
osmóza
— movement of molecules across a membrane
Danish:
osmose
— movement of molecules across a membrane
Dutch:
osmose
— movement of molecules across a membrane
Esperanto:
osmozo
— movement of molecules across a membrane
Finnish:
osmoosi
— movement of molecules across a membrane
French:
osmose
— movement of molecules across a membrane
Galician:
osmose
— movement of molecules across a membrane
German:
Osmose
— movement of molecules across a membrane
Greek:
ώσμωση
(ósmosi)
— movement of molecules across a membrane
Gujarati:
અભિસરણ
(abhisaraṇ)
— movement of molecules across a membrane
Hindi:
परासरण
(parāsaraṇ)
— movement of molecules across a membrane
Hungarian:
ozmózis
— movement of molecules across a membrane
Icelandic:
himnuflæði
— movement of molecules across a membrane
Indonesian:
osmosis
— movement of molecules across a membrane
Irish:
osmóis
— movement of molecules across a membrane
Italian:
osmosi
— movement of molecules across a membrane
Japanese:
浸透
(shintō)
— movement of molecules across a membrane
Khmer:
អូស្មូស
(ʼousmouh)
— movement of molecules across a membrane
Korean:
삼투
(samtu)
— movement of molecules across a membrane
Malayalam:
വൃതിവ്യാപനം
(vr̥tivyāpanaṁ)
— movement of molecules across a membrane
Māori:
rerewai
— movement of molecules across a membrane
Persian:
اسمز
(osmoz)
— movement of molecules across a membrane
Polish:
osmoza
— movement of molecules across a membrane
Portuguese:
osmose
— movement of molecules across a membrane
Russian:
о́смос
(ósmos)
— movement of molecules across a membrane
Shona:
musenerera
— movement of molecules across a membrane
Spanish:
ósmosis
— movement of molecules across a membrane
Swedish:
osmos
— movement of molecules across a membrane
Tagalog:
pananagos
— movement of molecules across a membrane
Tamil:
சவ்வூடு பரவல்
(cavvūṭu paraval)
— movement of molecules across a membrane
Tamil:
பிரசாரணம்
(piracāraṇam)
— movement of molecules across a membrane
Telugu:
ద్రవాభిసరణం
(dravābhisaraṇaṁ)
— movement of molecules across a membrane
Thai:
การออสโมสิส
— movement of molecules across a membrane
Ukrainian:
о́смос
(ósmos)
— movement of molecules across a membrane
Vietnamese:
sự thẩm thấu
— movement of molecules across a membrane
Chinese Mandarin:
耳濡目染
(ěrrúmùrǎn)
— picking up knowledge accidentally
Finnish:
through osmosis
— picking up knowledge accidentally
Finnish:
samalla
— picking up knowledge accidentally
German:
but see Nachempfindung
— picking up knowledge accidentally
German:
Nachvollziehung
— picking up knowledge accidentally
German:
Nachvollzug
— picking up knowledge accidentally
German:
Gefühlsansteckung
— picking up knowledge accidentally
German:
Hineindenkung
— picking up knowledge accidentally
German:
Gedankenansteckung
— picking up knowledge accidentally
German:
Gedankenübernahme
— picking up knowledge accidentally
German:
Ansichtenübernahme
— picking up knowledge accidentally
Polish:
osmoza
— picking up knowledge accidentally
Portuguese:
osmose
— picking up knowledge accidentally